Season the chicken breasts with taco spice. Grill the chicken at 300F for about 40 minutes or until the internal temperature reaches 170F. Once cooked, open the flame boiler to char the chicken and give it those beautiful grill marks.
In a Grill Basket, sauté the vegetables over the open flame for about 15 minutes, or until vegetables are slightly cooked.
In the burrito bowls, layer rice, cut up chicken, veggies, black beans, cheese, and salsa. Serve with sour cream.